Subtract 21/40 from 84/16, Solve 5 4/16

Subtract 21/40 from 84/16

1^st number: 5 4/16, 2^nd number: 21/40

84/16 - 21/40 is 189/40.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 40 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 16 × 5 = 80,
84/16 = 84 × 5/16 × 5 = 420/80
Likewise, for the 2nd fraction, since 40 × 2 = 80,
21/40 = 21 × 2/40 × 2 = 42/80
Subtract the two like fractions:
420/80 - 42/80 = 420 - 42/80 = 378/80
After reducing the fraction, the answer is 189/40
In mixed form: 429/40

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